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Income Taxes Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2019	Jun. 30, 2019	Dec. 31, 2022	Dec. 31, 2021
Discontinued Operation, Tax Effect of Discontinued Operation	$ 29
Entergy Arkansas [Member]
State Effective Income Tax Rate, Percent		6.50%
Regulatory Liability For Income Taxes - Current and Non Current		$ 25
Entergy Arkansas [Member] \| Subsequent Event [Member]
State Effective Income Tax Rate, Percent			5.90%	6.20%
Reduction to Effective Income Tax Rate At Combined Federal and State Income Tax Rate			0.50%

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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